I think you should make the seam adjustment more harsh i-e make the ball swing/seam rarely but at the same time make batting against moving ball very difficult then it will depict true cricket that if you bowl a beautiful jaffa , then it will likely to get wicket , currently most of the unplayable swinging/seaming deliveries are easily negiotiated by batsmen and then suddenly they get edge/lbw on a similar jaffas which does look a bit unrealistic because it sometimes feels like a random encounter